Well I think some of you could be wrong, but I dont want to argue. All I can say is the engine in a Japan car is different because the parts in it are different. Here is one example. The A/C compresser (little bolt in gold that prevents A/C from draining out) is bigger then US made. I wanted to show a picture but I dont think that Haynes manual book has the part shown.
I looked at the body, its made in japan, the hood is, too.
So thats pretty much what I know.